876649 has 4 divisors (see below), whose sum is σ = 904960. Its totient is φ = 848340.

The previous prime is 876647. The next prime is 876653. The reversal of 876649 is 946678.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 876649 - 2¹ = 876647 is a prime.

It is a Duffinian number.

876649 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (876643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14109 + ... + 14170.

It is an arithmetic number, because the mean of its divisors is an integer number (226240).

2⁸⁷⁶⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

876649 is a deficient number, since it is larger than the sum of its proper divisors (28311).

876649 is a wasteful number, since it uses less digits than its factorization.

876649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28310.

The product of its digits is 72576, while the sum is 40.

The square root of 876649 is about 936.2953593819. The cubic root of 876649 is about 95.7066056913.

The spelling of 876649 in words is "eight hundred seventy-six thousand, six hundred forty-nine".